Neuroanatomy | Dysarthria | More Dysarthria | Apraxia of Speech | Stuttering |
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What is the smallest unit of the nervous system?
Neuron
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What is the definition of Dysarthria?
A general label for a group of speech disorders stemming from impaired control of the speech muscles
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Which Dysarthria(s) are affected by damage to the Basal Ganglia? (What are some speech characteristics of both)
Hypokinetic- slow volitional speech movements,
tremor is speech/respiration muscles, strained/breathy voice quality, highly variable articulation Hyperkinetic- quick: rapid, unpatterned, involuntary movements, prolonged intervals between consonants, distorted vowels slow: sustained involuntary movements that build slowly to a peak before gradually subsiding, prolonged phonemes, short phrases/slow rate |
What is Apraxia of Speech?
A motor speech disorder in which the planning and organization of speech movements are impaired
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What is the definition of stuttering?
involuntary repetition of syllables, prolongation of sounds, blocking of sounds, hesitations, interjections/restarted phrases
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What is the number of cranial and spinal nerves in the PNS?
12 pairs of cranial and 31 pairs of spinal nerves
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What is Spastic Dysarthria associated with? Flaccid?
UMN; LMN
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Which Dysarthria is associated with degenerative disorders such as Parkinson's?
Hypokinetic (think of tremor)
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What are some speech characteristics of apraxia of speech?
Highly variable errors
Obvious groping during speech Errors increase as word length increases Substitution/clusters/placement errors most common |
When does stuttering most commonly occur?
2-5 yrs, peak at 4 yrs (most common in boys)
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What makes up the CNS?
The brain/spinal cord
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What is Spastic Dysarthria caused by? What kind of damage?
Caused by strokes/degenerative diseases; bilateral UMN damage
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What are the 3 steps for assessment of Dysarthria?
1. Systematic perceptual eval
2. Assess oral mech at rest and nonspeech 3. Evaluate through instrumentation |
Where is the damage usually located in Apraxia of Speech patients?
Language-dominant hemisphere; posterior frontal lobe around Broca's area (can be parietal lobe)
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Approximately what percentage are children thought to have a fluency disorder? Adolescents?
1% for children; .8% for adolescents
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Broca's is located in?
Primary somatosensory is located in? Primary auditory is located in?
Frontal
parietal temporal |
What are some speech characteristics of Spastic Dysarthria?
Strained-strangled voice quality
Imprecise consonant articulation Hypernasality/lower pitch |
In a dysarthria evaluation, the SLP evaluates all of the following systems EXCEPT:
Respiratory Voice Articulatory Central Nervous System
CNS
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What is the leading cause of Apraxia of Speech in adults?
Stroke
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People who produce more than ___ disfluencies per ___ words tend to be perceived to have a fluency disorder. Average stuttering-like disfluency is __ sec
10 per 100 words; 1 second
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What are the 6 lobes of the cerebrum?
Frontal
Parietal Occipital Temporal Insular Limbic |
What are some speech characteristics of Ataxic Dysarthria?
Irregular force, timing and amplitude of movements
Irregular and explosive changes in loudness/pitch Disrupted articulation "drunken speech" |
What are the 5 purposes of evaluation of Dysarthria?
Determine if speech is abnormal
Evaluate nature and severity of speech abnormalities Determine causes of speech abnormalities Determine if treatment is appropriate Identify potential directions for treatment |
Apraxia of Speech commonly co-occurs which what?
Broca's aphasia (think of where the damage is)
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What are the 4 main components for assessing candidacy of treatment?
Case history
Interview Assessment of communication/related behaviors Written report |